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//==========================================================================

//

//      pselect.c

//

//      Test pselect implementation

//

//==========================================================================

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//

// eCos is free software; you can redistribute it and/or modify it under    

// the terms of the GNU General Public License as published by the Free     

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// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License    

// for more details.                                                        

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// You should have received a copy of the GNU General Public License        

// along with eCos; if not, write to the Free Software Foundation, Inc.,    

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//

// As a special exception, if other files instantiate templates or use      

// macros or inline functions from this file, or you compile this file      

// and link it with other works to produce a work based on this file,       

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//==========================================================================

//#####DESCRIPTIONBEGIN####

//

// Author(s):           nickg

// Contributors:        nickg

// Date:                2002-11-08

// Purpose:             Test pselect implementation

// Description:         

//                      

//                      

//                      

//

//####DESCRIPTIONEND####

//

//==========================================================================

#include <pkgconf/system.h>

#include <pkgconf/isoinfra.h>

#ifdef CYGPKG_POSIX

#include <pkgconf/posix.h>

#endif

#ifndef CYGINT_ISO_PTHREAD_IMPL

# define NA_MSG "POSIX threads needed to run test"

#elif !defined(CYGPKG_NET)

# define NA_MSG "NET package needed to run test"

#elif !defined(CYGPKG_POSIX_SIGNALS)

# define NA_MSG "POSIX signals package needed to run test"

#endif

#include <cyg/infra/testcase.h>

#ifndef NA_MSG

#include <pkgconf/hal.h>

#include <pkgconf/kernel.h>

#include <pkgconf/io_fileio.h>

#define __ECOS 1                        // dont like this at all

#include <cyg/kernel/ktypes.h>         // base kernel types

#include <cyg/infra/cyg_trac.h>        // tracing macros

#include <cyg/infra/cyg_ass.h>         // assertion macros

#include <unistd.h>

#include <fcntl.h>

#include <sys/stat.h>

#include <errno.h>

#include <string.h>

#include <network.h>

#include <arpa/inet.h>

#include <pthread.h>

#include <signal.h>

#include <sys/select.h>

#include <cyg/infra/diag.h>            // HAL polled output

#define NUM_TEST_SIGNALS 1500          // So test completes in ~30 seconds

//--------------------------------------------------------------------------

#define SHOW_RESULT( _fn, _res ) \

diag_printf("INFO: " #_fn "() returned %d %s\n", _res, _res<0?strerror(errno):"");

//--------------------------------------------------------------------------

// Thread stacks

char thread1_stack[PTHREAD_STACK_MIN*2];

char thread2_stack[PTHREAD_STACK_MIN*2];

//--------------------------------------------------------------------------

// Local variables

// Thread IDs

pthread_t thread1;

pthread_t thread2;

struct sockaddr_in sa;

volatile int sigusr1_calls = 0;

volatile int sigusr1_sent = 0;

volatile int pselect_wakeups = 0;

volatile int pselect_eintr = 0;

volatile cyg_bool running = true;

//--------------------------------------------------------------------------

void show_fdsets( char *s, int nfd, fd_set *rd, fd_set *wr, fd_set *ex )

{

    int i;

    diag_printf("INFO:<%s nfd %d ",s,nfd);

    if( rd )

    {

        diag_printf("rd: [");

        for( i = 0; i < nfd ; i++ )

            if( FD_ISSET( i, rd ) ) diag_printf("%d ",i);

        diag_printf("] ");

    }

    if( wr )

    {

        diag_printf("wr: [");

        for( i = 0; i < nfd ; i++ )

            if( FD_ISSET( i, wr ) ) diag_printf("%d ",i);

        diag_printf("] ");

    }

    if( ex )

    {

        diag_printf("ex: [");

        for( i = 0; i < nfd ; i++ )

            if( FD_ISSET( i, ex ) ) diag_printf("%d ",i);

        diag_printf("] ");

    }

    diag_printf(">\n");

}

//--------------------------------------------------------------------------

void sigusr1( int sig, siginfo_t *info, void *context )

{

    CYG_TEST_CHECK( pthread_self() == thread1, "Sigusr1: not called by thread 1\n");

    sigusr1_calls++;

}

//--------------------------------------------------------------------------

// Selecting thread

// This thread just opens up a socket ready to accept a connection and

// then calls pselect() to wait for it. The timeout is set to 0 so we

// actually just poll.

void *pthread_entry1( void *arg)

{

    int fd = 0;

    int err;

    fd_set rd, wr;

    sigset_t mask, oldmask;

    struct sigaction sigact;

    struct timespec ts;

    CYG_TEST_INFO( "Thread 1 running" );

    FD_ZERO( &rd );

    FD_ZERO( &wr );

    sigfillset( &mask );

    pthread_sigmask( SIG_SETMASK, &mask, &oldmask );

    sigdelset( &mask, SIGUSR1 );

    sigact.sa_mask = mask;

    sigact.sa_flags = SA_SIGINFO;

    sigact.sa_sigaction = sigusr1;

    err = sigaction( SIGUSR1, &sigact, NULL );

    if( err < 0 ) SHOW_RESULT( sigact, err );

    CYG_TEST_INFO( "Thread1: calling socket()");

    fd = socket( AF_INET, SOCK_STREAM, IPPROTO_TCP );

    if( fd < 0 ) SHOW_RESULT( socket, fd );

    CYG_TEST_CHECK( fd >= 0, "socket() returned error");

    CYG_TEST_INFO( "Thread1: calling bind()");

    err = bind( fd, (struct sockaddr *)&sa, sizeof(sa));

    if( err < 0 ) SHOW_RESULT( bind, err );

    CYG_TEST_CHECK( err == 0, "bind() returned error");

    CYG_TEST_INFO( "Thread1: calling listen()");

    err = listen( fd, 3);

    if( err < 0 ) SHOW_RESULT( listen, err );

    CYG_TEST_CHECK( err == 0, "listen() returned error");

    FD_SET( fd, &rd );

    ts.tv_sec = 0;

    ts.tv_nsec = 0;

    while( running )

    {

        fd_set rd_res = rd;

        fd_set wr_res = wr;

//        ts.tv_nsec = 1000000 * (pselect_wakeups % 10);

        err = pselect( 8, &rd_res, &wr_res, NULL, &ts, &mask );

        if( err < 0 )

        {

            if( errno == EINTR ) pselect_eintr++;

            else SHOW_RESULT( pselect, err );

        }

        if( err > 0 ) show_fdsets( "Thread1 result: ", 8, &rd_res, &wr_res, NULL );

        pselect_wakeups++;

    }

    // If we were interrupted at just the wrong point above we may still

    // have a SIGUSR1 signal pending that we didn't handle, and so won't

    // have accounted for. So let's look...

    CYG_TEST_CHECK( 0 == sigpending( &mask ), "sigpending() returned error");

    if (1 == sigismember(&mask, SIGUSR1) )

        pselect_eintr++;

    pthread_sigmask( SIG_SETMASK, &oldmask, NULL );

    pthread_exit(arg);

}

//--------------------------------------------------------------------------

void *pthread_entry2( void *arg)

{

    struct timespec zzz;

    int err;

    zzz.tv_sec = 0;

    zzz.tv_nsec = 10*1000000;

    CYG_TEST_INFO( "Thread 2: running" );

    CYG_TEST_INFO( "Thread 2: sleeping" );

    nanosleep( &zzz, NULL );

    nanosleep( &zzz, NULL );

    nanosleep( &zzz, NULL );

    while( sigusr1_sent < NUM_TEST_SIGNALS )

    {

        nanosleep( &zzz, NULL );

        err = pthread_kill( thread1, SIGUSR1 );

        if( err != 0 )

            diag_printf("INFO: pthread_kill() returned %d %s\n", err, strerror(err));

        sigusr1_sent++;

        if( (sigusr1_sent % 500) == 0 )

            diag_printf("INFO: <Thread 2: %d signals sent>\n",sigusr1_sent);

    }

    running = false;

    CYG_TEST_INFO( "Thread 2: exit" );

    pthread_exit( arg );

}

//==========================================================================

// main

int main( int argc, char **argv )

{

    void *retval;

    pthread_attr_t attr;

    struct sched_param schedparam;

    CYG_TEST_INIT();

    sa.sin_family = AF_INET;

    sa.sin_len = sizeof(sa);

    inet_aton("127.0.0.1", &sa.sin_addr);

    sa.sin_port = htons(1234);

    init_all_network_interfaces();

    // Create test threads

    {

        pthread_attr_init( &attr );

        schedparam.sched_priority = 5;

        pthread_attr_setinheritsched( &attr, PTHREAD_EXPLICIT_SCHED );

        pthread_attr_setschedpolicy( &attr, SCHED_RR );

        pthread_attr_setschedparam( &attr, &schedparam );

        pthread_attr_setstackaddr( &attr, (void *)&thread1_stack[sizeof(thread1_stack)] );

        pthread_attr_setstacksize( &attr, sizeof(thread1_stack) );

        pthread_create( &thread1,

                        &attr,

                        pthread_entry1,

                        (void *)0x12345671);

    }

    {

        pthread_attr_init( &attr );

        schedparam.sched_priority = 10;

        pthread_attr_setinheritsched( &attr, PTHREAD_EXPLICIT_SCHED );

        pthread_attr_setschedpolicy( &attr, SCHED_RR );

        pthread_attr_setschedparam( &attr, &schedparam );

        pthread_attr_setstackaddr( &attr, (void *)&thread2_stack[sizeof(thread2_stack)] );

        pthread_attr_setstacksize( &attr, sizeof(thread2_stack) );

        pthread_create( &thread2,

                        &attr,

                        pthread_entry2,

                        (void *)0x12345672);

    }

    // Now join with thread1

    CYG_TEST_INFO( "Main: calling pthread_join(thread1)");

    pthread_join( thread1, &retval );

    // And thread 2

    CYG_TEST_INFO( "Main: calling pthread_join(thread2)");

    pthread_join( thread2, &retval );

    diag_printf("INFO: pselect returns: %d\n", pselect_wakeups );

    diag_printf("INFO: pselect EINTR returns: %d\n", pselect_eintr );

    diag_printf("INFO: SIGUSR1 sent: %d\n", sigusr1_sent );

    diag_printf("INFO: SIGUSR1 delivered: %d\n", sigusr1_calls );

    CYG_TEST_CHECK( sigusr1_sent == sigusr1_calls, "SIGUSR1 calls != delivered");

    CYG_TEST_CHECK( sigusr1_sent == pselect_eintr, "SIGUSR1 calls != pselect EINTR wakeups");

    CYG_TEST_PASS_FINISH("pselect");

}

#else

//==========================================================================

// main

void cyg_start(void)

{

    CYG_TEST_INIT();

    CYG_TEST_NA(NA_MSG);

}

#endif